Growing Sunflower

helianthus annuus : Asteraceae / the daisy family

Jan	Feb	Mar	Apr	May	Jun	Jul	Aug	Sep	Oct	Nov	Dec
				P	P

(Best months for growing Sunflower in USA - Zone 5a regions)

P = Sow seed

Sow in garden. Sow seed at a depth approximately three times the diameter of the seed. Best planted at soil temperatures between 50°F and 86°F. (Show °C/cm)
Space plants: 8 - 18 inches apart
Harvest in 10-11 weeks.
Compatible with (can grow beside): Cucumbers, Melons, Sweetcorn, Squash
Avoid growing close to: Potatoes

Your comments and tips

07 Jul 21, Liz (New Zealand - temperate climate): If they survive the move and don't have too much root damage, then water every two to three days. to keep the roots damp but not swamped.
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07 Apr 21, Donna Mourra (USA - Zone 10b climate): I'm looking for a sunflower plant for Zone 10
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08 Apr 21, Anonymous (USA - Zone 10b climate): Google a sunflower seed selling website and pick one out.
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30 Mar 21, (USA - Zone 6b climate): I live in Cleveland ohio. Wanted to know if I can grow sun flowers here
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03 Apr 21, aurora (USA - Zone 10a climate): Yes! I've visited Cleveland countless times and I've been to a sunflower field there :)
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31 Mar 21, Anonymous (USA - Zone 7a climate): You can work out your climate zone from the blue tab then go to sunflower page.
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05 Jul 20, Ann Carson (USA - Zone 8b climate): What kind of soil best for sunflowers? I planted afew times that begin growing then rodents eat top of sunflowers. Same as radishes too.How do i solve the problems?
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12 Jun 20, Vicki Holley (USA - Zone 9a climate): Looking for a monthly calendar to plant by for zone 9a. Was hoping to plant something in June? (Try here https://www.gardenate.com/?zone=115) Gardenate
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16 May 20, Thelma Jenkins (USA - Zone 7b climate): Our area has a lot of wind, up to 95 in summer. Get some snow in winter. Would like to plant them along our fenceline around our 1acre. Zone7b.AZ. Any advice will be appreciated.
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23 Jun 18, Susie (USA - Zone 8b climate): When is the last month I can successfully plant Mammoth Sunflower seeds in my zone 8b?
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Showing 31 - 40 of 43 comments

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Sunflowers have multiple uses: edible oil, seeds to feed for livestock, snack seeds, flower production etc. You didn't mention your intended use. End use will impact cultivar selection. My best guess is you are trying for oil seeds -- since this is probably the most lucrative sunflower product. Most likely there are University studies for sunflowers in your area to help you with cultivar selection. Your looking for Sunflower seed trial results -- or something like that -- favoring agricultural publications and University papers over other sites. Many of these publications will not be applicable -- so it is a matter of wading through the various publications (from creditable and "neutral" sources) -- clearly much of the information will be "excessively detailed" -- but eventually, hopefully you will find a nice chart the compares the YIELDs for the various cultivars in your area, or an area similar to yours. My search engines always seem to throw me back to North America -- so I am unable to hunt down a good publication/article for you.

- Celeste Archer

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Growing Sunflower

helianthus annuus : Asteraceae / the daisy family

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